Thin King Aluminum Card Case Classic yet modern, Thin King Card Case is a truly original Finnish design for men and women Unique hidden grip method securely holds 1 to 4 credit cards, ID cards, or other similarly sized cards Compact and lightweight enough to fit any pocket or purse discreetly, yet strong enough to protect during sports, travel, and everyday use Strong & durable anodized aluminum frame measuring 3.4" x 2.4" x 0.3" Blocks RFID card scanners and skimmers. Securely holds 1 to 4 credit cards, ID cards, or other similarly sized cards